New Patent: Canon EF-S 15-53mm F/2.8-4 Lens

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Canon has filed a new patent: EF-S 15-53mm F/2.8-4 Lens for its APS-C sensor DSLR cameras. This should be an improvement on entry level kit glass.  Maybe Canon starts to actually invest in their crop systems.

Take a look at the patent details below translated by Google.

Patent Publication No. 2015-152765

  • Published 2015.8.24
  • Filing date 2014.2.14

Example 1

  • Focal length 15.40 20.46 51.00mm
  • Fno 2.80 3.00 4.30
  • Half angle of view ω 41.57 33.73 14.99 °
  • Image height 13.66mm
  • Overall length of the lens 119.65 123.99 149.53mm
  • BF 35.93 38.66 50.56mm

via: Egami

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